This paper describes characteristics evaluation of the power conditioner which has the function of Maximum Power Point Tracking (MPPT) by ＇＇mountain climbing method＇＇ through computer simulations. The generated power on the constant voltage control is compared to the one on MPPT with the load matching correction factor (Kpm). In this simulation, the following parameters are chosen, the rate of the voltage Delta V on changing the operating point and of the voltage Delta V-c, on checking the maximum point. As a result, the influence of these parameters on Kpm is showed and it is made clear that we should decide the MPPT parameters with care.